Aids to Navigation

Buoys are the most familiar aids to navigation-they’re the signposts of the water. Here’s how they work: entering a channel or river from open water, buoys on the right (starboard) are painted red and are even numbered starting from the mouth. Buoys on the left (port) side of the channel are green buoys with odd numbers. Stay between the red and green buoys and keep to the right of the channel.

Buoys marking mid-channel have red and white vertical stripes; those marking junctions are striped horizontally red or green with the top band marking the best channel. Red top: keep buoy on your right. Green top: keep buoy on your left. Remember: RRR for “Red Right Returning.” Returning means going upstream, or coming from the ocean.

Floating Channel Markers

Special Buoy (Yellow): A caution area meaning to steer clear. Indicates an isolated danger.